Medicine
Glomerular Filtration Rate Estimation Equations and Their Limitations
Quick fact
The most widely used equation, CKD-EPI, was developed in 2009 and is more accurate than the older MDRD equation, especially for near-normal kidney function.
Why this is interesting
Your kidneys filter about 180 liters of blood every day, but how do we know if they're doing a good job without directly measuring that flow?